Limitations on Sub-Diffraction Imaging with a Negative Refractive Index Slab

Details Limitations on Sub-Diffraction Imaging with a Negative Refractive Index Slab Limitations on Sub-Diffraction Imaging with a Negative Refractive Index Slab

2002-06-28

arxiv.org/abs/cond-mat/0206568v1

Appl. Phys. Lett. 82, 1506-1508 (2003)

Physics

Condensed Matter

pdf file

Scientific paper

10.1063/1.1554779

Recently it has been proposed that a planar slab of material, for which both the permittivity and permeability have the values of -1, could bring not only the propagating fields associated with a source to a focus, but could also refocus the nonpropagating near-fields, thereby achieving a subdiffraction image. In this work we discuss the sensitivity of the subwavelength focus to various slab parameters, pointing out the connection to slab plasmon modes. We also note and resolve a paradox associated with the perfect imaging of a point source. We conclude that subwavelength resolution is achievable with available technology, but only by implementation of a critical set of design parameters.

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